Folder.



c. H. VP'IETTIGREW.

FOLDER.

APPLICATION FILED APR. 28, 19094 e sums-sun Patented Mar. 29,

U. H. PETTIGREW.

FOLDER. APPLICATION FILED APR. 28, 1909v Patented Mar. 29, 1910.

nuemtoz HI Ill JZSH Witnmno C. H. PETTIGREW.

Patented 313x29, 1910.

4 SHEETS-SHEET 3.

mwntoz:

I 0. H. PETTIGREW.

FOLDER.

APPLICATION FILED APR. 28, 1909.

Patented Mar. 29, 1910.

4 SHEETS-SHEET 4.

311mm toz wil mzooeo iinrrsn s rsrns rrlrsrir cler cs;

CHARLES H. PETTIGREW, OF BATTLE CREEK. MICHIGAN, ASSIGNTOR T0 DUPLEX PRINTING PRESS COMPANY. OF BATTLE CREEK, MICHIGAN, A CORPORATION OF MICHIGAN.

Forums.

Specification of Letters ratent.

Patented lllaixz 1910.

Application filed April 28, 190.). Serial No. 492,688.

To all whom 4.2- mmy concern:

llc it. known that 1, CHARLES H. Ps'rrrmunv. of Battle Creek, in the. county of Calhoun and State of l'lichigan, have invented certain new and useful Improvements in Folders; and I hereby declare that. the following is a i'ull, clear, and exact description thereof, reference being had to the accommnying drawings, which form part of this.

inder, and rotating the tucker-blades continuously on their sites, in a direction contrary to the directional rotation of the cylinder, and also rotating the supports in such time relative to the rotation of the cylinderthat as a resultant of the orbital movement of the tucker-blade shafts with thecylinder dhe axial rotation of these blades on their own shafts, and the radial movement of the tucker-blade shafts caused by the rotation of their eccentric. hearings the edges of the tucker-Modes will he unveil to and from the first told rolls and tuck the paper tlierehetween in a. comparatively and genile manner as compared with the action of tumbling tucker-blades, and Without any sudden jar or reversal of movement. of any part so thatv such improved fohling apparatus is cspahle of operating in very high speed without injurious pounding.

in the accompanying drawings I have shown several practical embodiments of the invention, and will now describe thesaine and sun'nnarize in the. claims following this,

description the essential features, comhinzb tions and couslructions'ol' parts for which protection is desired.

In said draivings-d igure 1 is an end view of 1. portion of a rotary folding mechanism, equip ied with my invention. Fig. 2 is a longitudinal section thereof on line 22,

'7 isa longitudinal section on line 'i7, Fig. 6. 8 is a detail View of. an eccentric race-wiry and gear which can be used in the folder shown in Figs. 6 and 7. Fig. 9 is a sectional View on line 9--9, Fig. 8. Figs. 10 end 11 are diagrams illustrating the action of she tucker-blade, Figs. 12 end 13 are diagrams illustrating contours for the eccentric-gear and race-Way's.

in the drawings 1 designates the cutting cylinder and 2 the cutting-and-folding cylinder of s rotary folding machine, which cylinders may be journaled as usual in a fraineoi any suitable construction, perts'of which are indicated F in the drawings. This cylinder 1 is provided with the usual cutting knife 1 and cylinder 2 with the cushion 9%; cylinder 2 may also he provided with the usual collecting pins, which being Well known need no description herein and ihaf'getheen omitted from the drawings for the purpose of clearness.

The paper coming'froin the press (not shown) is led from rolls .A-w, to and between the cutting and folding cylinders 1 and 2, end delivered from the cylinder 2 between. the folding; rolls 78-58, which may he journaled in brackets 6 attached to the frames The parts as thus far described are alike in the scieral ligiures, and may he of any desired :o.nst1ruction, the-present; invention having particular reference to the means for operating the tucker-blades in the cylinder 2.

The cylinder 2 is provided with heads 2 attached to il shaft 2 and these heads are provided with circular openings 2 in which are fitted Qrotalable disks 3 in which are journaled the shafts l. of the tucker-blades 4. two such blades being indicated in the drawings located at diametrically opposite points ofthc cylinder. The journals of shafts l are eccentric to the centers of disks 3, which latter therefore form What. I shall hereinafter term eccentric-bearings for the tucker-blade shafts. 7

In the form illustrated in Figs. 1 and 2 each shaft 4? extends through its eccentric bearings 3 and beyond the ends of the cylinder 2, and is provided on one end with a pinion l which meshes with an internal gear 5, which is located eccentric to the cylinder shaft 2" and is fastened to the frame F by bolts 5, or in other suitable manner, so. as to be held rigidly in place. The shaft 4 extends beyond the pinion 4: and its extremity. is rotatively engaged by theend of'an eccentric-strap 6*, which strap embraces an eccentric 6 which is perforated for the passage of shaft 2 and is rigidly fastened to the frame F in an suitable manner, as by bolts 6*, so that sait eccentric 6 has no radial movement. I preferably use an eccentric 6 and eccentric straps 6 at each end of the cylinder 2, sothat the tuckerblade shafts a will be kept in exact aline-' ment with the shaft 2* and will not be sub- 'jected to any torsional strain nor. deflection.

The folding cylinder 2 has a longitudinal slot 2 adjacent each shaft 4, through which slot the adjacent tucker-blade projects at the required time in order to tuck the papers between the rolls B-B.

The part'N shown in Fig. 2 as fastened to the hub of the right-hand eccentric 6 is a pin-cam that is .used to operate the impallng pins which lead the sheet around the cy inder, these impaling pins are well known and form 110 part of the present invention and therefore are not illustrated in the ions 4 with rack 5L Prefera drawings.

It should be noted thatthe pinions 4 are kept continually in mesh with the internal gear 5', and therefore as the cylinder 2 re volves the tucker-blades 4 are carried around in an orbital path at a speed equaling that of the rotation of the cylinder 2; at the'same time each tucker blade is rotated on its own axis or'sha'ft 4 by the enga ement of pin- %ly the imons 4' have one-thirdasmany-teeth as t e rack 5 so that each tucker-blade 4 is rotated three times on its own axis, during each revolution of the, cylinder 2.

the eccentric 6'by' reason of their connection with the shafts 4";and the; eccentrics 6 are so located that the straps are given a reciprocating movement during each revolution 'of cylinder .2 and this movement of the movement tothe eccentrit bearings 3 of the tucker-blade shafts 4, the eccentric bearings 3 being caused to make one complete rota-- tion during-each rotation of the cylinder 2.

As a resultant'of this construction and Qty range-ment ofparts it follows that each tucker-blade a will have aslight radial movement in the cylinder-2 in addition to its rotary movementand each tucker-blade will be projected through-the adjacent slot 2 in the cylinder,

as this slot passes Z-th'e rolls B-B. and atfthis point the-tucker blades will operate to thrust the papers from the cylinder 2 to and between the folding rolls 13-13. The withdrawal and projection of thetucker-blade has relation not only to thecircumference of the cylinder but also to the large eccentric internal gear. Its line of retraction and thrust is therefore compelled to regard both of these elements. and can be perfectly radial to neither but must follow a line determined bythe'two. This results in a motion of the tucker shaft which describes a complete small circle during every revolution of the cylinder. That is, the retraction and thrust of the shaft are along such lines that the curve thereof follows'the track described by the bore of the eccentric bearing. I

By reference to-the' diagrams Figs. 3, 4 and 5, the movement of the tucker-blades can be readily followed. In Fig. 3 the lower blade t is shown in fully-projected position, and just ready to withdraw from between the rolls. B-B; the dotted lines 5" indicate the pitch of the teeth of internal gear 5; the dotted lines 4 indicate the path circumscribed by the edge of each blade a rotating around its own axis 4;. The dotted lines d indicate the path traversed by the edge of each tucker-blade during its orbital movement with the cylinder. It will be seen from these diagrams that each blade is given a comparatively slow entrance, and slow withdrawal from, between the rolls BB In other Words instead of depending upon the mere instant rotation of the blade upon.

its own axis to effect the tucking operation I give the blade a slower rotation and supplement its rotative movement by the action I cylinder 2' revolvesit will carry the tuckerblades inan orbital path, and at. the same time thepinions 4P, on the tucker-blade p I I shafts, being in mesh with the stationary The eccentric-straps 6. are rotated around rack' 5, will cause the tucker-blades to. rotate on their own axes; while the eccentrics 6 andstraps 6 engaging shafts 4t will cause the eccentric bearings 3 to make one revolution in the cylinder 2 during one revolution of such cylinder. The object of these eccen straps causes them-to impart a slow rotary.

tricbearings 3 is-to adjust the benters of the;

cylinder and internal gear 5, which itwill be noted is setv eccentric to the axis ofjt'he cylinder, see particularly Figs. 3, 4 and;

'Such-eccentr1c bearings 3 or their equivalents are important and essentialto the suc-,

Y The axis of thetucker-blade-shaft and its gear must, in order to retain proper mesh ,of the shaft gear and the large internal gear, 'maintain a constant fixed distance-from the tuck enbladeshafts i and compensate for I the varying positions of the centers of the cessful operation of my folder. v

ceases pitch line of said internal near. The circun't'tet'ence'ot' the large cylinder does not coincide with the circumference of this large internal gear nor, consequently, with its pitch line, and any point traveling ina true circle with the revolving cylinder does not maintain a fixed distance from the pitch line of the eccentric pitch line of the in ternal gear. The center of the large gear is also not identical with the center of the cylinder. Therefore the gear on the tuckershaft in order to mesh truly with the large gear must not only more in or out as the pitch line of the large gear approaches or recedes from the line of the cylinders rotation, but must. also he so moved circumferentially of the cylinder as to keep in a true radial position relative to the center and meshing point of the large internal gear. To secure'the motion described and constantly be in true position the tucker blade shaft axis is con'ipelled to describe a small circle, as indicated in Figll of the dram" int, (and also in other figures), the points of which coincide with points which the gear center (of the shaft gear) must occupy as the cylinder revolves. In regard to the positions shown in Fig. 11 it is obvious from the foregoing that the change of position of the eccentric bearing begins only when the eccentricity of the large gear be gins and must be completed when the eccentricity is again lost. There-"fore as indicated in Fig. 11 the total rotation of the bearing is accomplished While the cylinder is in the lower part of its revolution, and where the cylinder circumference and the gear are concentric the hearing will, of course, maintain a relatively stationary position. Figr. 3 and 4, which show a moreextended eccentricity, also show a similarly extended period of rotation of the eccentric hearing. The means employed to force the eccentric bearing-to'turn in exact time with the eecentricity of thegear is in one case the ecentric straps, and in the other the tccentrie raceway, ipping the end of the recite"- shaft. The straps, or raceways, are made to follow exactly the path which the center of the shaft. and gear must he in. Therefore as the cylinder revolves in the general directiion which the shaft and gear must follow, the strajpsor raceways'are steadily exerting a presure on the shaft, Whidh in turn forces *zlie eccentric bearing, which is free to move, 10 turnand allow the shaft to follow the determined line of the stra or raceway. in other Words, it is the combination of the revolving cylinder and the guidin strap or raceway-which compels theeccentric hearing to turn.

The form described ll consider the sim- I plest; but in some cases, as asubstitute for or equivalent of the eccentrics 6 and eccentrue-straps 6, Laney use 8CCBDl1I1C-C8lTlS or lraceways one such ctnistruction is illus trated in Figs. (3 and T. is shown in said Figs. (3 and 7 in place of the eccentrics U and straps o I employ raceways U" which are fixedly attached to the frame I eccentrio to the shaft 2 of the cylinder 2, and are engaged by rollers r on the outer ends of the shafts P of the tucker blades. 'lhesc eccentric race-ways cause the eccentric bearings 3 to turn once for each revolution of the cylinder .2, substantially in the same manner and for the same purpose as the eccentrics (l and straps (S of the construction above described. it these race-Ways G be made circular like the eccentric (5, the tuckerblades 4: will have substantially the movements indicated in diagrams Figs. 8, i and 5.

It will be noted that when the tuckerblade is gi-vcn as much projection between rolls B-B, as is indicated in Fig. 3 it will also be'slightly projected beyond the periphery of the cylinder 2 at the points l but the slight projection of the blade at points sl will be of no practical disadvantage or moment in the ordinary use of the folders. By making the race-Ways elliptical or orbital this incidental projection of the blades at the rolls 1 43, can be overcome. Thus it the race-Ways 0', Figs. (3 and Y, be made of an oval form as shown in Figs. 8 and 9, the tucker-blades will only projected through the cylinder slots 2 when at the lowermost side of the cylinder and acentrolls B As indi at'ed in Figs. 1.0 and 11 the upper hall. of the raceway 6 is made concern trio to the axis of the cylinder 2 and the lower half of the race-Way irregular and eccentric to the cylinder; and the internal gear 5 instead of being circular is made to correspond. in contour to the eccentricn'ace- Ways 6" as indicated at 5, Figs. 8 and 9. By using such a gear and race-Way the tuclterblades are 'ltept within the cylinder except. when they approach the rolls lill when they will be projected. The path of the tucker-blades in this construction is indi cated in the diagrams Figs. 10 and 11, and in this case the points a? lie within the peiphery of the cylinder 2; but the amount of projection is given the tuckerblades at the rolls B--B.

Obviously by varying the contour of the eccentric race-Ways and of. the internal gears the time and instant of projection of the tucker-blades can be determined and varied with great nicety. Diagram Fig. 12 indicates how the internal gear and eccentric race-ways may be true ellipses; and Fig. 1?, indicates an oval shape for such gear and race way.

In each case shown the number of teeth in pinion lama gen 1 5 should be. in the pro portion of l to 3, or say 30 teeth in the at the points it" or at any points, except pinion 4 to 90 teeth in the gear 5. In each case the main object of the invention to Wit I is obtained.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a folding apparatus, the combination of a folding cylinder, eccentric bear ings therein, a tucker-blade journaled in said bearings, means for rotating the blade on its own axis during the rotation-of the cylinder, and means for rotating the said bearings during the rotation of the cylinder.

' 2. In combination a folding cylinder, rotatable disks therein, a tucker-blade journaled eccentrically in said disks; means for rotating the blade on its own axis, and means for rotating the disks during the rotation of the cylinder.

3. In a folding mechanism the combination of a folding cylinder, eccentric bearings in the ends thereof, means for rotating these hearings once for each rotation of the cylinder, a tucker blade journaled in said bearings, and means for rotatingthe blade independently of said bearings during the rotation of the cylinder.- v

4. In a folding mechanism the combination of-a folding cylinder, rotatable disks journaled in the ends thereof, means for rotating these disks once durin each rotation of the cyinder, a tucker bIadejonrnaled eccentrically in said disks, and means for rotating the blade on its own axis independent ly of said disks during the rotation of the cylinder.

5. In a folding apparatus the combination of a' folding cylinder, a tucker blade therein, means for rotating said blade on its own axis three times for each rotation of the cylinder, eccentric bearings for said tucker blade in said cylinder, and means for rotating the said eccentric bearings once for each rotation of the cylinder.

(3. In a rotary folder the combination of a folding cylinder, eccentric bearings therein,

atucke -blade shaft mounted in said bearings, a gear adjacent said cylinder, a pinion -on the tucker-blade shaft engaging said gear, and means for causing said eccentric bearings to turn during the rotation of the cylinder.

7. In a rotary folder the combination of a folding cylinder, eccentric bearings journaled therein, a tucker-blade shaft mounted in said bearings, a fixed internal gear adjacent said" cylinder, a ipinion on the tuckerblade shaft engaging said gear, and means for rotating :the eccentric bearings once for each rotation of the cylinder.

8. The combination of a folding cylinder, a shaft carrying a tucker-blade therein, a

gear adjacent the cylinder, a pinion on the tucker-blade shaft meshing with said gear,

.and eccentric devices for moving the said shaftlaterally in a small orbit" during the rotation of the cylinder.

9. The combination of a folding cylinder, a tucker-blade carrying shaft therein, rotatable bearings for said shaft in the cylinder,

a gear adjacent the cylinder, a pinion on the tucker-blade shaft, meshing with said gear,

.means for moving the said shaft laterally in a small orbit during the rotation of the cylinder, and thereby causing said bearings to turn during the revolution of the cylinder.

10. In a folder the combination of a folding cylinder, a tucker-blade shaft therein, bearings for said shaft, a gear fixed adon the tucker-blade shaft; engaging the said gear, and devices engaging the tucker-blade shaft whereby the latter is moved in. a small orbit and said bearings are shifted duringthe rotation of the cylinder.

1.1. The combination of a slotted folding cylinder, a tucker-blade shaft therein, an

internal gear fixed adjacent the cylinder, a pinion on the tucker-blade shaft meshing with said gear, and eccentric devices for moving said shaft in a small orbit and shifting the blade toward and from the slot-in the cylinder during the rotation thereof.

12. The combination of a folding cylinder, a tucker-blade shaft therein, eccentric bearings for said shaft in the cyilnder, an internal gear adjacent the cylinder, a pinion on the tucker-blade shaft meshing with said gear, eccentric devices for moving said shaft laterally in a small orbit during the rotation of the cylinder, thereby 'cansingsaid hearings to rotate during the revolution of the cylinder.

13. In a folder the combination of a folding cylinder, a tucker-blade shaft therein, eccentric bearings for said shaft, an internal gear fixed adjacent one end of said cylinder, a pinion on the tucker-blade shaft engaging the said gear, and eccentric devices en ag" ing' the outer ends of the tucker-blade slia ft whereby the eccentric bearings are shifted during the rotation of the cylinder.

14. In combination a folding cylinder, disks journaled in said cylinder, a tucker-. blade shaftjournaled eccentrically in said disks, a gear adjacent one end of the cylinder, a pinion on the tucker-blade shaft engaging said gear, an eccentric device adjacent the gear, and means whereby the tucker-blade shaft is controlled by said eccentric and the disks thereby caused to turn during the rotation of the cylinder.

' 15. In combination a folding cylinder, disks jo'n'rnaled in said cyhnder, a tuckerblade shaft jonrnaled eccentrically in said disks, a gear adjacent one end of the cylinder, a pinion on the tucker-blade shaft onacent one end of said cylinder, a pinion V gaging said ends of the cy inder, and means whereby the tucker-blade shaft is controlled by said eccentrics and the disks thereby caused to turn 16. In a folder, the combination of a folding cylinder, disks journaled in said cylinder, a tucker-blade shaft journaled eccentrically in said disks, an internal gear adjacent the end of the cylinder, a plnion on the tucker-blade shaft engaging said gear, eccentrics fixed adjacent one end of the cylinder, and eccentric straps connecting the tuckerfblade shaft w th said eccentrics, whereby the disksare caused to turn during the rotation-of the cylinder.

ear, eccentrics adjacent the 17. In a folder, the combination of a folding cylinder, disks journaled in said cylinder, a tucker-blade shaft journaled eccentrically in said disks, an internal gear adjacent the ends of the cylinder, a pinion on the tucker-blade shaft engaging said gear, eccentrics adjacent one end of the cylinder,

and eccentric straps connecting the tuckerblade shaft with said-eccentrics, the tuckerblade being rotated thrice on its own axis during one rotation of the cylinder and the disks bein caused to rotate once for each rotation o the cylinder.

In testimony that I claim the foregoing as my own, I aflix my signature in presence of two witnesses.

' CHARLES H. PETTIGREW.

Witnesses:

CHARLES A. GRAMEs, IRVING K. STONE. 

